名前だけ入力するとフラッシュメッセージではなくエラーが出てしまいます。

写真投稿アプリを作成しているのですが、新規作成のさい、名前だけを入力するとフラッシュメッセージでエラーが出て欲しいのですが、下記のエラーが出てしまいます。
解決法を教えていただければ幸いです。

error
1ActiveRecord::NotNullViolation in PhotosController#create
2PG::NotNullViolation: ERROR: null value in column "image" violates not-null constraint DETAIL: Failing row contains (35, null, a, , , , , , 3, 1, 2020-09-21 07:41:26.677697, 2020-09-21 07:41:26.677697). : INSERT INTO "photos" ("name", "nated_food", "dislike_word", "hate_human", "weaknes", "remark", "group_id", "user_id", "created_at", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING "id"
3Extracted source (around line #16):
414
515
616
717
818
919
10              
11  def create
12    @photo = @group.photos.new(photo_params)
13    if @photo.save
14      redirect_to group_photos_path(@group), notice: 'my truthを作成しました'
15    else
16      @photos = @group.photos.includes(:user)
17
18Rails.root: /Users/user/Desktop/my-truth

controller
1class PhotosController < ApplicationController
2  before_action :set_group
3  before_action :set_photos
4  
5  def index
6    @groups = Group.new
7    @photos = @group.photos.includes(:user)
8  end
9
10  def new
11    @photo = Photo.new
12  end
13  
14  def create
15    @photo = @group.photos.new(photo_params)
16    if @photo.save
17      redirect_to group_photos_path(@group), notice: 'my truthを作成しました'
18    else
19      @photos = @group.photos.includes(:user)
20      flash.now[:alert] = '入力してください。'
21      render :new
22    end
23  end
24
25  def show
26    @photo = Photo.find(params[:id])
27  end
28
29  private
30  def photo_params
31    params.require(:photo).permit(:name,:image,:nated_food,:dislike_word,:hate_human,:weaknes,:remark).merge(user_id: current_user.id)
32  end
33
34  def set_group
35    @group = Group.find(params[:group_id])
36  end
37
38  def set_photos
39    @photos = Photo.all
40  end
41
42end

haml
1.wrapper
2  = render "groups/grouptop"
3  .container
4    = form_for [@group,@photo] do |form|
5      .form_center
6        %p1 新規投稿
7        %br
8        %a ニックネーム：
9        %a{class: "condition"}必須
10        %br
11        = form.text_area :name, class: "text_space",placeholder: "ニックネーム"
12
13        %br
14        %a 変顔写真：
15        %a{class: "condition"}必須
16        %br
17        = form.file_field :image, class: "text_space",placeholder: "Image Url"
18
19        %br
20        %a 嫌いな食べ物：
21        %a{class: "condition"}必須
22        %br
23        = form.text_area :nated_food, class: "text_space",placeholder: "例：ニンジン"
24
25        %br
26        %a 嫌いな言葉：
27        %a{class: "condition"}必須
28        %br
29        = form.text_area :dislike_word, class: "text_space",placeholder: "例：あほ"
30
31        %br
32        %a 嫌いな人間：
33        %a{class: "condition"}必須
34        %br
35        = form.text_area :hate_human, class: "text_space",placeholder: "例：ケチなやつ"
36
37        %br
38        %a 弱点：
39        %a{class: "condition"}必須
40        %br
41        = form.text_area :weaknes, class: "text_space",placeholder: "例：脇腹"
42
43        %br
44        %a コメント：
45        %a{class: "condition"}必須
46        %br
47        = form.text_area :remark, class: "text_space",placeholder: "コメント"
48
49        %br
50        %br
51        = form.submit "SEND",class: "send_btn"

migrate
1class CreatePhotos < ActiveRecord::Migration[5.2]
2  def change
3    create_table :photos do |t|
4      t.text       :image,null: false
5      t.string     :name,null: false
6      t.text       :nated_food,null: false
7      t.text       :dislike_word,null: false
8      t.text       :hate_human,null: false
9      t.text       :weaknes,null: false
10      t.text       :remark,null: false
11      t.references :group, foreign_key: true
12      t.references :user, foreign_key: true
13      t.timestamps
14    end
15  end
16end
17